Slack voice

Wikipedia

Slack voice (or lax voice) is the pronunciation of consonant or vowels with a glottal opening slightly wider than that occurring in modal voice. Such sounds are often referred to informally as lenis or half-voiced in the case of consonants. In some Chinese varieties, such as Wu, and in a few Austronesian languages, the 'intermediate' phonation of slack stops confuses listeners of languages without these distinctions, so that different transcription systems may use p or b for the same consonant. In Xhosa, slack-voiced consonants have usually been transcribed as breathy voice. Although the IPA has no dedicated diacritic for slack voice, the voiceless diacritic (the under-ring) may be used with a voiced consonant letter, though this convention is also used for partially voiced consonants in languages such as English.[1]

Wu Chinese "muddy" consonants are slack voice word-initially, the primary effect of which is a slightly breathy quality of the following vowel.[1]

BilabialAlveolarVelar
IPAWuglossIPAWuglossIPAWugloss
slack voice [b̥ʌ̀ʔ]'white' [d̥ǐ]'earth' [ɡ̊ə̀ʔ](possessive particle)
tenuis [pʌ́ʔ]'hundred' [tíʔ](a grammatical particle) [kóʔ]'corner'
aspirated [pʰʌ́ʔ]'to strike' [tʰî]'sky' [kʰʌ́ʔ]'guest'

Javanese contrasts slack and stiff voiced bilabial, dental, retroflex, and velar stops.[1]

BilabialDental StopDental AffricateRetroflexVelar
phonationIPAglossIPAglossIPAglossIPAglossIPAgloss
stiff voice [paku]'nail' [tamu]'guest' [tsariʔ]'sheet (of paper)' [ʈiʈiʔ]'little' [kali]'river'
slack voice [b̥aku]'standard' [d̥amu]'blow' [d̥z̥arit](type of women's clothing) [ɖ̥isiʔ]'first' [ɡ̊ali]'dig'


Parauk contrasts slack voicing in its vowels. The contrast is between "slightly stiff" and "slightly breathy" vowels; the first are between modal and stiff voice, while the latter are captured by slack voice.[1]

References

  1. 1 2 3 4 Ladefoged, Peter; Maddieson, Ian (1996). The Sounds of the World's Languages. Oxford: Blackwell. pp. 63–6. ISBN 0-631-19815-6.